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| Number | Title | Issue Date |
| 7442661 | Boron carbide based sintered compact and method for preparation thereof A boron carbide based sintered body having a four-point flexural strength of at least 400 MPa and a fracture toughness of at least 2.8 MPa·m1/2, which has the following two preferred embodiments. (1) A boron carbide-titanium diboride sintered body obtain... | 10/28/2008 |
| 7427428 | Interphase for ceramic matrix composites reinforced by non-oxide ceramic fibers A ceramic matrix composite material is disclosed having non-oxide ceramic fibers, which are formed in a complex fiber architecture by conventional textile processes; a thin mechanically weak interphase material, which is coated on the fibers; and a non-oxide or oxid... | 09/23/2008 |
| 7419925 | Lightweight high performance ceramic material A sintered ceramic composition includes at least 50 wt. % boron carbide and at least 0.01 wt. % of at least one element selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy Ho, Er, Tm, Yb, and Lu, the sintered ceramic composition being charact... | 09/02/2008 |
| 7417002 | Boron carbide based sintered compact and method for preparation thereof A boron carbide based sintered body having a four-point flexural strength of at least 400 MPa and a fracture toughness of at least 2.8 MPa·m1/2, which has the following two preferred embodiments. (1) A boron carbide-titanium diboride sintered body obtain... | 08/26/2008 |
| 7375044 | Process for making a ceramic body containing alumina and boron carbide A process for making a ceramic body that includes the following steps: providing a starting powder mixture, the starting powder mixture comprises between about 15 volume percent and about 35 volume percent boron carbide powder and at least about 50 volume percent al... | 05/20/2008 |
| 7319079 | Container for evaporation of metal and method to manufacture thereof A refractory container for evaporating metals, having significantly improved useful life and corrosion resistance properties, said container consists essentially of a refractory boride, boron nitride, and about 0.10 to 10 wt. % of a rare earth metal compound selecte... | 01/15/2008 |
| 7267882 | Ceramic/metal material and method for making same An improved ceramic/metal composite material is disclosed which is fully reacted with aluminum. The composite is made from a ceramic preform, such as silicon carbide, having a binding agent, such as silica, that is contacted with a metal mixture or alloy, such as al... | 09/11/2007 |
| 7235505 | Carbide and nitride ternary ceramic glove and condom formers A slip-cast article former containing ternary ceramics, particularly of carbide and nitride materials, having the formula Mn+1AXn(MAX), where M is a transition metal, A is an element from Groups IA and IVA of the periodic table, X is nitrogen o... | 06/26/2007 |
| 7217674 | Alumina-boron carbide ceramics and methods of making and using the same A ceramic body, as well as a method of making the ceramic body, wherein in one aspect a hot-pressing method is used to produce the ceramic body. In another aspect, a sintering to full density method is used to produce the ceramic body. The hot-pressed ceramic body c... | 05/15/2007 |
| 7208037 | Molding compound, use thereof and a method for producing an oxide-ceramic sintered body The invention proposes to produce a mixture that is shrink-resistant, or has a freely selectable degree of shrinkage, and can be used as a molding compound, and a method for producing a corresponding oxide-ceramic sintered body. The molding compound comprises an int... | 04/24/2007 |
| 7166823 | Method of making a heating element of molybdenum silicide type and a heating element A method for the production of a heating element that is composed essentially of molybdenum silicide and alloys of that basic material, and a heating element formed from such material. A material is produced that contains substantially Mo(Si1-xAlx | 01/23/2007 |
| 7157393 | Carbide and nitride ternary ceramic glove and condom formers A slip-casted article former containing ternary ceramics, particularly of carbide and nitride materials, having the formula M.sub.n+1AX.sub.n (MAX), where M is a transition metal, A is an element from Groups IIIA and IVA of the periodic table, X is nitrogen or carbo... | 01/02/2007 |
| 7128850 | Electrically conductive Si-Ti-C-N ceramics Composite materials containing silicon, titanium, carbon, and nitrogen, formed by spark plasma sintering of ceramic starting materials to a high relative density, demonstrate unusually high electrical conductivity as well as high-performance mechanical and chemical ... | 10/31/2006 |
| 7112549 | Low thermal expansion ceramic and member for exposure system A low-thermal-expansion, rigid and wear-resistant ceramic is provided. The low-thermal-expansion ceramic of the invention includes 60 vol % to 99.9 vol % of at least one selected from the group consisting of cordierite, spodumene and eucryptite and 0.1 vol % to 40 v... | 09/26/2006 |
| 7067775 | Treatment for improving the stability of silicon carbide heating elements A treatment and an object so treated, which may be used to improve the electrical stability, energy efficiency and performance of silicon carbide heating elements is disclosed. Use is made of colloidal binders and silicides to treat silicon carbide heating elements ... | 06/27/2006 |
| 7034260 | Method of making a heating element of molybdenum silicide type A method of producing a heating element made from molybdenum silicide and alloys thereof, and which includes aluminum oxide on its surface. A material is produced that contains substantially Mo(Si1-xAlx)2 and Al2O3 | 04/25/2006 |
| 7022175 | Initial solids mixture for a later organic coating application An initial solids mixture for a later organic coating, such as pigmented coatings, films, priming coats, etc., e.g., for a coil coating method in which an initial solids mixture is applied to a substrate, e.g., broad strip, and this is thereby pre-coated, wherein th... | 04/04/2006 |
| 7014942 | Method for solid oxide fuel cell anode preparation A method for preparation of an anode for a solid oxide fuel cell in which a plurality of zircon fibers are mixed with a yttria-stabilized zirconia (YSZ) powder, forming a fiber/powder mixture. The fiber/powder mixture is formed into a porous YSZ layer and calcined. ... | 03/21/2006 |
| 7008893 | Silicon nitride-based composite sintered body and producing method thereof The present invention provides a silicon nitride-based sintered body having excellent mechanical properties from room temperature to a medium-low temperature range, a low friction coefficient and excellent wear resistance; a raw material powder for the sintered body... | 03/07/2006 |
| 6984454 | Wear-resistant member having a hard composite comprising hard constituents held in an infiltrant matrix A tough wear-resistant hard member that includes a hard composite member and a support that has a surface area adjacent to the hard composite member wherein the hard composite member is affixed to the support over at least a portion of the adjacent surface area of t... | 01/10/2006 |
| 6921885 | Method of increasing the useful life of a molybdenum silicide heating element A method of increasing the useful life of heating elements that consist essentially of molybdenum silicide and alloys thereof, wherein the heating elements operate at high temperatures in heat treatment processes and generally rest against the floor and/or the ceili... | 07/26/2005 |
| 6919054 | Reactant nozzles within flowing reactors Improved reaction chamber designs are described that provide for improved control over the flow within the reaction chamber. The reaction chambers contain reactions for particle production from a flowing reactant stream. Improved reactant delivery nozzles are descri... | 07/19/2005 |
| 6919544 | Method to improve the life span of a heating element of a molybdenium disilicide at lower temperatures A method of increasing the length of life of heating elements that consist essentially of molybdenum-silicide, and alloys thereof, when the elements are operated at a low temperature, such as at a temperature ranging from 400-600° C. The heating element material co... | 07/19/2005 |
| 6770583 | Transistion metal containing ceramic with metal nanoparticles A transition metal-containing ceramic made by the process comprising the step of pyrolyzing an organometallic linear polymer containing at least one metallocenylene unit, at least one silyl or siloxyl unit, and at least one acetylene unit to form a ceramic; where th... | 08/03/2004 |
| 6736875 | Composite cordierite filters Composite cordierite honeycomb structures especially suitable for diesel exhaust filtration applications comprise a non-oxide polycrystalline phase constituting 10-70% by weight, with the remainder of the ceramic material constituting a cordierite phase, the non-oxi... | 05/18/2004 |
| 6667262 | Self-lubricating ceramic composites The invention comprises a self-lubricating ceramic composite characterized as having a low porosity derived from a mixture of at least one ceramic powder preferably selected from the group consisting of silicon nitride, silicon carbide, zirconia, alumina,... | 12/23/2003 |
| 6635593 | High strength sintered impact having excellent resistance to cratering A sintered material containing high-pressure phase-type boron nitride and a binder is provided. The high-pressure phase-type boron nitride is contained in an amount of from 50% to 78% by volume, and the balance is a binder phase. The binder phase comprise... | 10/21/2003 |
| 6632762 | Oxidation resistant coating for carbon There is provided a ceramic coating of zirconium diboride, silicon carbide, zirconium phosphate and silicon phosphate, that protects carbon-based materials from oxidation in high temperature oxidizing environments. The coating is applied at room temperatu... | 10/14/2003 |
| 6620756 | Ceramic matrix composite cutting tool material A reinforcing material is uniformly dispersed in a yttrium aluminum garnet matrix material for use as a machine tool material specially suited for machining Ti or a Ti alloy. The matrix material and the reinforcing material are present in proportions sele... | 09/16/2003 |
| 6589898 | High-temperature strength and heat-resistant composite material "refsic" The invention relates to materials intended for use in an oxidative medium at high temperatures, including the manufacture of high-temperature electric heaters, parts, sensors and tools operating at temperatures of up to 1900° C. and higher. On the basis... | 07/08/2003 |
| 6534428 | Titanium diboride sintered body with silicon nitride as a sintering aid The present invention relates to a titanium diboride sintered body and a method for manufacturing thereof wherein silicon nitride is added to a titanium diboride as a sintering aid. The sintered body according to the present invention has a fine structure... | 03/18/2003 |
| 6482759 | Molybdenum silicide material with high strength Molybdenum silicide material with high strength at both room temperature and high temperatures, comprising a composite material, which is made from a mixture including MoSi2 and ZrO2. The mixture includes 5-30 vol-% ZrO2 a... | 11/19/2002 |
| 6461989 | Process for forming 312 phase materials and process for sintering the same A process is provided for forming a material comprising an M3 X1 Z2 phase comprising the steps of: (a) providing a mixture of (i) at least one transition metal species, (ii) at least one co-metal species selected from the ... | 10/08/2002 |
| 6461990 | Cubic boron nitride composite particle Cubic boron nitride composite particles containing hard microparticles dispersed in cubic boron nitride particles. The hard microparticles have an average particle size of about 10 nm to about 10 μm and a particle size equal to or smaller than one-third ... | 10/08/2002 |
| 6458732 | Lightweight dry refractory A dry refractory composition having superior insulating value. The dry refractory composition also may have excellent resistance to molten metals and slags. The composition includes filler lightweight material, which may be selected from perlite, vermicul... | 10/01/2002 |
| 6440343 | Process for controlling the microstructural bias of multi-phase composites A process for controlling and thus predicting the microstructural bias of multi-phase composites to obtain preferential positioning of the component compounds in their morphology and position in the resulting microstructure to cause the grains of a first ... | 08/27/2002 |
| 6432855 | Superabrasive boride and a method of preparing the same by mechanical alloying and hot pressing A ceramic material which is an orthorhombic boride of the general formula: AlMgB14 :X, with X being a doping agent. The ceramic is a superabrasive, and in most instances provides a hardness of 40 GPa or greater.... | 08/13/2002 |
| 6420294 | Titanium diboride sintered body with silicon nitride as a sintering aid and a method for manufacture thereof The present invention relates to a titanium diboride sintered body and a method for manufacturing thereof wherein silicon nitride is added to a titanium diboride as a sintering aid. The sintered body according to the present invention has a fine structure... | 07/16/2002 |
| 6417126 | Ceramics and process for producing The present invention provides a process for producing alumina matrix carbide and boride reinforced ceramic composites wherein for any particular composite, the relative density is about 97% or more of the theoretical density. The composites are prepared ... | 07/09/2002 |
| 6391811 | Pest resistant MoSi2-based materials containing in-situ grown ଲ-Si3N4 whiskers A MoSi2 pest resistant material includes in-situ grown ଲ-Si3 N4 whiskers. In addition to excellent pest resistance, the material provides a lower coefficient of thermal expansion for better match with continuous rein... | 05/21/2002 |
